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                        <li class="item item-class toggle-manual toggle-manual-show"
                            data-longname="module:ol/control/Attribution~Attribution"
                            data-name="ol/control/attribution">
                            <span class="title toggle">
                                <span class="fa fa-chevron-right me-2 mt-1"></span>
                                <span><a
                                        href="module-ol_control_Attribution-Attribution.html">ol​/control​/Attribution</a></span>
                            </span>
                            <div class="member-list" data-type="methods">
                                <span class="subtitle">Methods</span>
                                <ul>
                                    <li data-name="changed"><a
                                            href="module-ol_control_Attribution-Attribution.html#changed">changed</a>
                                    <li data-name="dispatchevent"><a
                                            href="module-ol_control_Attribution-Attribution.html#dispatchEvent">dispatchEvent</a>
                                    <li data-name="get"><a
                                            href="module-ol_control_Attribution-Attribution.html#get">get</a>
                                    <li data-name="getcollapsed"><a
                                            href="module-ol_control_Attribution-Attribution.html#getCollapsed">getCollapsed</a>
                                    <li data-name="getcollapsible"><a
                                            href="module-ol_control_Attribution-Attribution.html#getCollapsible">getCollapsible</a>
                                    <li data-name="getkeys"><a
                                            href="module-ol_control_Attribution-Attribution.html#getKeys">getKeys</a>
                                    <li data-name="getmap"><a
                                            href="module-ol_control_Attribution-Attribution.html#getMap">getMap</a>
                                    <li data-name="getproperties"><a
                                            href="module-ol_control_Attribution-Attribution.html#getProperties">getProperties</a>
                                    <li data-name="getrevision"><a
                                            href="module-ol_control_Attribution-Attribution.html#getRevision">getRevision</a>
                                    <li data-name="on"><a
                                            href="module-ol_control_Attribution-Attribution.html#on">on</a>
                                    <li data-name="once"><a
                                            href="module-ol_control_Attribution-Attribution.html#once">once</a>
                                    <li data-name="render"><a
                                            href="module-ol_control_Attribution-Attribution.html#render">render</a>
                                    <li data-name="set"><a
                                            href="module-ol_control_Attribution-Attribution.html#set">set</a>
                                    <li data-name="setcollapsed"><a
                                            href="module-ol_control_Attribution-Attribution.html#setCollapsed">setCollapsed</a>
                                    <li data-name="setcollapsible"><a
                                            href="module-ol_control_Attribution-Attribution.html#setCollapsible">setCollapsible</a>
                                    <li data-name="setmap"><a
                                            href="module-ol_control_Attribution-Attribution.html#setMap">setMap</a>
                                    <li data-name="setproperties"><a
                                            href="module-ol_control_Attribution-Attribution.html#setProperties">setProperties</a>
                                    <li data-name="settarget"><a
                                            href="module-ol_control_Attribution-Attribution.html#setTarget">setTarget</a>
                                    <li data-name="un"><a
                                            href="module-ol_control_Attribution-Attribution.html#un">un</a>
                                    <li data-name="unset"><a
                                            href="module-ol_control_Attribution-Attribution.html#unset">unset</a>
                                </ul>
                            </div>
                            <div class="member-list" data-type="fires">
                                <span class="subtitle">Fires</span>
                                <ul>
                                    <li data-name="change"><a
                                            href="module-ol_events_Event-BaseEvent.html#event:change">change</a>
                                    <li data-name="error"><a
                                            href="module-ol_events_Event-BaseEvent.html#event:error">error</a>
                                    <li data-name="propertychange"><a
                                            href="module-ol_Object.ObjectEvent.html#event:propertychange">propertychange</a>
                                </ul>
                            </div>
                        <li class="loading">Loading …
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            <div class="main col-md-8 col-lg-9">
                <h1 class="page-title" data-filename="module-ol_control_Attribution-Attribution.html">Class: Attribution
                </h1>
                <div id="latest-check" class="alert alert-warning alert-dismissible" role="alert" style="display:none">
                    <button id="latest-dismiss" type="button" class="btn-close" data-bs-dismiss="alert"
                        aria-label="Close"></button>
                    This documentation is for OpenLayers v<span id="package-version">8.2.0</span>. The <a
                        id="latest-link" href="#" class="alert-link">latest</a> is v<span id="latest-version"></span>.
                </div>




                <section class="content">

                    <header>
                        <h2 class="my-3">
                            <span class="ancestors"><a
                                    href="module-ol_control_Attribution.html">ol/control/Attribution</a>~</span>Attribution
                        </h2>
                        <br>



                        <pre
                            class="prettyprint source"><code>import Attribution from '<a href="module-ol_control_Attribution.html">ol/control/Attribution</a>.js';</code></pre>


                        <div class="row p-3 ">
                            <!-- <div id="ad" class="col-lg-5 order-2 align-self-center border rounded bg-light ">
                                <script async type="text/javascript"
                                    src="https://cdn.carbonads.com/carbon.js?serve=CE7DV53U&placement=openlayersorg"
                                    id="_carbonads_js"></script>
                            </div> -->

                            <div class="class-description col-lg-7 align-self-center ps-0">
                                <p>显示与图层源相关联的所有归属的控件。此控件是地图中包含的默认控件之一。
                                    默认情况下，它将在地图的右下角部分显示，但可以使用<code>.ol-attribution</code>的CSS选择器进行更改。</p>
                            </div>

                        </div>
                    </header>

                    <article>
                        <div class="container-overview">



                            <dl>

                                <dt class="">

                                    <div class="nameContainer">
                                        <div class="anchor" id="Attribution">
                                        </div>
                                        <h4 class="name">
                                            new Attribution<span class="signature">(<span
                                                    class="optional">options</span>)</span>



                                        </h4>

                                        <div class="tag-source">
                                            <a
                                                href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js">control/Attribution.js</a>,
                                            <a
                                                href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js#L46">line
                                                46</a>
                                        </div>

                                    </div>


                                </dt>
                                <dd class="">













                                    <table class="params">
                                        <thead>
                                            <tr>

                                                <th>Name</th>


                                                <th>Type</th>

                                                <th class="last">Description</th>
                                            </tr>
                                        </thead>

                                        <tbody>


                                            <tr class="">

                                                <td class="name"><code>className</code></td>



                                                <td class="type">


                                                    <span class="param-type">string</span>



                                                    (defaults to 'ol-attribution')


                                                </td>



                                                <td class="description last">

                                                    <p>css类名</p>
                                                </td>
                                            </tr>



                                            <tr class="">

                                                <td class="name"><code>target</code></td>



                                                <td class="type">


                                                    <span class="param-type">HTMLElement</span>
                                                    |

                                                    <span class="param-type">string</span>

                                                    | undefined


                                                </td>



                                                <td class="description last">

                                                    <p>如果你想将控件渲染在地图视口之外，请指定一个目标。</p>
                                                </td>
                                            </tr>



                                            <tr class="">

                                                <td class="name"><code>collapsible</code></td>



                                                <td class="type">


                                                    <span class="param-type">boolean</span>

                                                    | undefined


                                                </td>



                                                <td class="description last">

                                                    <p>指定是否可以折叠归属信息。如果未指定，源通过其<code>attributionsCollapsible</code>设置控制此行为。
                                                    </p>
                                                </td>
                                            </tr>



                                            <tr class="">

                                                <td class="name"><code>collapsed</code></td>



                                                <td class="type">


                                                    <span class="param-type">boolean</span>



                                                    (defaults to true)


                                                </td>



                                                <td class="description last">

                                                    <p>指定是否应该在启动时折叠归属信息。</p>
                                                </td>
                                            </tr>



                                            <tr class="">

                                                <td class="name"><code>tipLabel</code></td>



                                                <td class="type">


                                                    <span class="param-type">string</span>



                                                    (defaults to 'Attributions')


                                                </td>



                                                <td class="description last">

                                                    <p>用于按钮提示的文本标签。</p>
                                                </td>
                                            </tr>



                                            <tr class="">

                                                <td class="name"><code>label</code></td>



                                                <td class="type">


                                                    <span class="param-type">string</span>
                                                    |

                                                    <span class="param-type">HTMLElement</span>



                                                    (defaults to 'i')


                                                </td>



                                                <td class="description last">

                                                    <p>用于折叠的归属信息按钮的文本标签。除了文本，还可以使用元素（例如<code>span</code>
                                                        元素）。</p>
                                                </td>
                                            </tr>



                                            <tr class="">

                                                <td class="name"><code>expandClassName</code></td>



                                                <td class="type">


                                                    <span class="param-type">string</span>



                                                    (defaults to className + '-expand')


                                                </td>



                                                <td class="description last">

                                                    <p>折叠的归属信息按钮的CSS类名。</p>
                                                </td>
                                            </tr>



                                            <tr class="">

                                                <td class="name"><code>collapseLabel</code></td>



                                                <td class="type">


                                                    <span class="param-type">string</span>
                                                    |

                                                    <span class="param-type">HTMLElement</span>



                                                    (defaults to '›')


                                                </td>



                                                <td class="description last">

                                                    <p>用于展开的归属信息按钮的文本标签。除了文本，还可以使用元素（例如<code>span</code>
                                                        element元素）。</p>
                                                </td>
                                            </tr>



                                            <tr class="">

                                                <td class="name"><code>collapseClassName</code></td>



                                                <td class="type">


                                                    <span class="param-type">string</span>



                                                    (defaults to className + '-collapse')


                                                </td>



                                                <td class="description last">

                                                    <p>展开的归属信息按钮的CSS类名。</p>
                                                </td>
                                            </tr>



                                            <tr class="">

                                                <td class="name"><code>render</code></td>



                                                <td class="type">


                                                    <span class="param-type">function</span>

                                                    | undefined


                                                </td>



                                                <td class="description last">
                                                    <p>当控件需要重新渲染时调用的函数。此函数在<code>requestAnimationFrame</code>回调中调用。</p>
                                                </td>
                                            </tr>


                                        </tbody>
                                    </table>




                                    <dl class="details">





















                                    </dl>



                                    <h5>Fires:</h5>
                                    <ul>
                                        <li class="">
                                            <code><a href="module-ol_events_Event-BaseEvent.html#event:change">change</a></code>
                                            (<a href="module-ol_events_Event-BaseEvent.html">BaseEvent</a>)
                                            -通用更改事件。在修订计数器增加时触发。
                                        </li>

                                        <li class="">
                                            <code><a href="module-ol_events_Event-BaseEvent.html#event:error">error</a></code>
                                            (<a
                                                href="module-ol_events_Event-BaseEvent.html">BaseEvent</a>)-通用错误事件。在发生错误时触发。
                                        </li>

                                        <li class="">
                                            <code><a href="module-ol_Object.ObjectEvent.html#event:propertychange">propertychange</a></code>
                                            (<a href="module-ol_Object.ObjectEvent.html">ObjectEvent</a>) - 当属性发生更改时触发。
                                        </li>
                                    </ul>











                                </dd>

                            </dl>

                        </div>




                        <h3 class="subsection-title">Extends</h3>

                        <ul>
                            <li><a href="module-ol_control_Control-Control.html">Control</a></li>
                        </ul>















                        <h3 class="subsection-title">Methods</h3>

                        <dl>


                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="changed">
                                    </div>
                                    <h4 class="name">
                                        changed<span class="signature">()</span>

                                        <span class="inherited"><a
                                                href="module-ol_Observable-Observable.html#changed">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js">Observable.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js#L68">line
                                            68</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">
                                <div class="description">
                                    <p>增加修订计数器并派发一个 'change' 事件。</p>
                                </div>











                                <dl class="details">





















                                </dl>













                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="dispatchEvent">
                                    </div>
                                    <h4 class="name">
                                        dispatchEvent<span class="signature">(event)</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{boolean | undefined}</span>

                                        <span class="inherited"><a
                                                href="module-ol_events_Target-Target.html#dispatchEvent">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/events/Target.js">events/Target.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/events/Target.js#L85">line
                                            85</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">
                                <div class="description">
                                    <p>派发一个事件并调用所有监听此类型事件的监听器。事件参数可以是字符串或具有 <code>type</code>属性的对象。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>event</code></td>



                                            <td class="type">


                                                <span class="param-type"><a
                                                        href="module-ol_events_Event-BaseEvent.html">BaseEvent</a></span>
                                                |

                                                <span class="param-type">string</span>




                                            </td>



                                            <td class="description last">

                                                <p>Event object.</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                如果任何人在事件对象上调用 preventDefault，或者如果任何监听器返回 false，则为<code>false</code>。
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="get">
                                    </div>
                                    <h4 class="name">
                                        get<span class="signature">(key)</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{*}</span>

                                        <span class="inherited"><a
                                                href="module-ol_Object-BaseObject.html#get">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js">Object.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js#L135">line
                                            135</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>获取一个值。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>key</code></td>



                                            <td class="type">


                                                <span class="param-type">string</span>




                                            </td>



                                            <td class="description last">
                                                <p>键名称。</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                Value.
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer">
                                    <div class="anchor" id="getCollapsed">
                                    </div>
                                    <h4 class="name">
                                        getCollapsed<span class="signature">()</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{boolean}</span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js">control/Attribution.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js#L321">line
                                            321</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>当归属信息当前被折叠时返回<code>true</code>，否则返回<code>false</code>。
                                    </p>
                                </div>











                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                True if the widget is collapsed.
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer">
                                    <div class="anchor" id="getCollapsible">
                                    </div>
                                    <h4 class="name">
                                        getCollapsible<span class="signature">()</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{boolean}</span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js">control/Attribution.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js#L280">line
                                            280</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>当归属信息可折叠时返回<code>true</code>，否则返回<code>false</code>。
                                    </p>
                                </div>











                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                True if the widget is collapsible.
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="getKeys">
                                    </div>
                                    <h4 class="name">
                                        getKeys<span class="signature">()</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{Array.&lt;string>}</span>

                                        <span class="inherited"><a
                                                href="module-ol_Object-BaseObject.html#getKeys">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js">Object.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js#L148">line
                                            148</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">



                                <div class="description">
                                    <p>获取对象属性名称的列表。</p>
                                </div>











                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                属性名称列表。
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="getMap">
                                    </div>
                                    <h4 class="name">
                                        getMap<span class="signature">()</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{<a href="module-ol_Map-Map.html">Map</a>
                                            | null}</span>

                                        <span class="inherited"><a
                                                href="module-ol_control_Control-Control.html#getMap">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Control.js">control/Control.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Control.js#L104">line
                                            104</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">
                                <div class="description">
                                    <p>获取与此控件关联的地图。</p>
                                </div>











                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                Map.
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="getProperties">
                                    </div>
                                    <h4 class="name">
                                        getProperties<span class="signature">()</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{Object.&lt;string, *>}</span>

                                        <span class="inherited"><a
                                                href="module-ol_Object-BaseObject.html#getProperties">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js">Object.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js#L157">line
                                            157</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>获取包含所有属性名称和值的对象。</p>
                                </div>











                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                Object.
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="getRevision">
                                    </div>
                                    <h4 class="name">
                                        getRevision<span class="signature">()</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{number}</span>

                                        <span class="inherited"><a
                                                href="module-ol_Observable-Observable.html#getRevision">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js">Observable.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js#L79">line
                                            79</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>获取此对象的版本号。每次对象被修改时，其版本号将递增。</p>
                                </div>











                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                Revision.
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="on">
                                    </div>
                                    <h4 class="name">
                                        on<span class="signature">(type, listener)</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{<a
                                                href="module-ol_events.html#~EventsKey">EventsKey</a> | Array&lt;<a
                                                href="module-ol_events.html#~EventsKey">EventsKey</a>>}</span>

                                        <span class="inherited"><a
                                                href="module-ol_Observable-Observable.html#on">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js">Observable.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js#L152">line
                                            152</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>监听特定类型的事件。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>type</code></td>



                                            <td class="type">


                                                <span class="param-type">string</span>
                                                |

                                                <span class="param-type">Array.&lt;string></span>




                                            </td>



                                            <td class="description last">
                                                <p>事件类型或事件类型的数组。</p>
                                            </td>
                                        </tr>



                                        <tr class="">

                                            <td class="name"><code>listener</code></td>



                                            <td class="type">


                                                <span class="param-type">function</span>




                                            </td>



                                            <td class="description last">
                                                <p>侦听器函数。</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                监听器的唯一键。如果将事件类型的数组作为第一个参数调用，返回将是键的数组。
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="once">
                                    </div>
                                    <h4 class="name">
                                        once<span class="signature">(type, listener)</span><span
                                            class="fa fa-arrow-circle-right"></span><span
                                            class="type-signature returnType">{<a
                                                href="module-ol_events.html#~EventsKey">EventsKey</a> | Array&lt;<a
                                                href="module-ol_events.html#~EventsKey">EventsKey</a>>}</span>

                                        <span class="inherited"><a
                                                href="module-ol_Observable-Observable.html#once">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js">Observable.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js#L164">line
                                            164</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>仅监听特定类型的事件一次。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>type</code></td>



                                            <td class="type">


                                                <span class="param-type">string</span>
                                                |

                                                <span class="param-type">Array.&lt;string></span>




                                            </td>



                                            <td class="description last">
                                                <p>事件类型或事件类型的数组。</p>
                                            </td>
                                        </tr>



                                        <tr class="">

                                            <td class="name"><code>listener</code></td>



                                            <td class="type">


                                                <span class="param-type">function</span>




                                            </td>



                                            <td class="description last">
                                                <p>侦听器函数。</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>















                                <h5>Returns:</h5>
                                监听器的唯一键。如果将事件类型的数组作为第一个参数调用，返回将是键的数组。
                                <br />




                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="render">
                                    </div>
                                    <h4 class="name">
                                        render<span class="signature">(mapEvent)</span>

                                        <span class="inherited"><a
                                                href="module-ol_control_Attribution-Attribution.html#render">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js">control/Attribution.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js#L330">line
                                            330</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>更新归属信息元素。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>mapEvent</code></td>



                                            <td class="type">


                                                <span class="param-type"><a
                                                        href="module-ol_MapEvent-MapEvent.html">MapEvent</a></span>




                                            </td>



                                            <td class="description last">

                                                <p>Map event.</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>













                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="set">
                                    </div>
                                    <h4 class="name">
                                        set<span class="signature">(key, value, <span
                                                class="optional">silent</span>)</span>

                                        <span class="inherited"><a
                                                href="module-ol_Object-BaseObject.html#set">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js">Object.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js#L215">line
                                            215</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>设置值。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>key</code></td>



                                            <td class="type">


                                                <span class="param-type">string</span>




                                            </td>



                                            <td class="description last">
                                                <p>键名称。</p>
                                            </td>
                                        </tr>



                                        <tr class="">

                                            <td class="name"><code>value</code></td>



                                            <td class="type">


                                                <span class="param-type">*</span>




                                            </td>



                                            <td class="description last">

                                                <p>Value.</p>
                                            </td>
                                        </tr>



                                        <tr class="">

                                            <td class="name"><code>silent</code></td>



                                            <td class="type">


                                                <span class="param-type">boolean</span>

                                                | undefined


                                            </td>



                                            <td class="description last">
                                                <p>是否在不触发事件的情况下进行更新。</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>













                            </dd>




                            <dt class="">

                                <div class="nameContainer">
                                    <div class="anchor" id="setCollapsed">
                                    </div>
                                    <h4 class="name">
                                        setCollapsed<span class="signature">(collapsed)</span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js">control/Attribution.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js#L307">line
                                            307</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>根据传递的参数折叠或展开归属信息。如果归属信息不可折叠，或者当前的折叠状态已经是请求的状态，则不会执行任何操作。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>collapsed</code></td>



                                            <td class="type">


                                                <span class="param-type">boolean</span>




                                            </td>



                                            <td class="description last">

                                                <p>True if the widget is collapsed.</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>













                            </dd>




                            <dt class="">

                                <div class="nameContainer">
                                    <div class="anchor" id="setCollapsible">
                                    </div>
                                    <h4 class="name">
                                        setCollapsible<span class="signature">(collapsible)</span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js">control/Attribution.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Attribution.js#L289">line
                                            289</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>设置归属信息是否可折叠。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>collapsible</code></td>



                                            <td class="type">


                                                <span class="param-type">boolean</span>




                                            </td>



                                            <td class="description last">

                                                <p>True if the widget is collapsible.</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>













                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="setMap">
                                    </div>
                                    <h4 class="name">
                                        setMap<span class="signature">(map)</span>

                                        <span class="inherited"><a
                                                href="module-ol_control_Control-Control.html#setMap">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Control.js">control/Control.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Control.js#L116">line
                                            116</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">
                                <div class="description">
                                    <p>从当前地图中删除控件并将其附加到新地图中。传递 <code>null</code>
                                        以仅从当前地图中删除控件。子类可以在此处设置事件处理程序以获取有关地图更改的通知。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>map</code></td>



                                            <td class="type">


                                                <span class="param-type"><a href="module-ol_Map-Map.html">Map</a></span>
                                                |

                                                <span class="param-type">null</span>




                                            </td>



                                            <td class="description last">

                                                <p>Map.</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>













                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="setProperties">
                                    </div>
                                    <h4 class="name">
                                        setProperties<span class="signature">(values, <span
                                                class="optional">silent</span>)</span>

                                        <span class="inherited"><a
                                                href="module-ol_Object-BaseObject.html#setProperties">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js">Object.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js#L235">line
                                            235</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>设置一个键值对的集合。请注意，这将更改任何现有属性并添加新属性（不会删除任何现有属性）。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>values</code></td>



                                            <td class="type">


                                                <span class="param-type">Object.&lt;string, *></span>




                                            </td>



                                            <td class="description last">

                                                <p>Values.</p>
                                            </td>
                                        </tr>



                                        <tr class="">

                                            <td class="name"><code>silent</code></td>



                                            <td class="type">


                                                <span class="param-type">boolean</span>

                                                | undefined


                                            </td>



                                            <td class="description last">
                                                <p>是否在不触发事件的情况下进行更新。</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>













                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="setTarget">
                                    </div>
                                    <h4 class="name">
                                        setTarget<span class="signature">(target)</span>

                                        <span class="inherited"><a
                                                href="module-ol_control_Control-Control.html#setTarget">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Control.js">control/Control.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/control/Control.js#L155">line
                                            155</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">
                                <div class="description">
                                    <p>此函数用于为控件设置目标元素。如果控件已添加到地图中 (即控件的
                                        <code>setMap</code>方法被调用后)，则调用此函数不会有任何效果。如果在控件构造函数传递的选项中未设置目标，并且未调用<code>setTarget</code>，则控件将添加到地图的覆盖容器中。
                                    </p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>target</code></td>



                                            <td class="type">


                                                <span class="param-type">HTMLElement</span>
                                                |

                                                <span class="param-type">string</span>




                                            </td>



                                            <td class="description last">

                                                <p>Target.</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>













                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="un">
                                    </div>
                                    <h4 class="name">
                                        un<span class="signature">(type, listener)</span>

                                        <span class="inherited"><a
                                                href="module-ol_Observable-Observable.html#un">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js">Observable.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Observable.js#L173">line
                                            173</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>取消监听特定类型的事件。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>type</code></td>



                                            <td class="type">


                                                <span class="param-type">string</span>
                                                |

                                                <span class="param-type">Array.&lt;string></span>




                                            </td>



                                            <td class="description last">
                                                <p>事件类型或事件类型的数组。</p>
                                            </td>
                                        </tr>



                                        <tr class="">

                                            <td class="name"><code>listener</code></td>



                                            <td class="type">


                                                <span class="param-type">function</span>




                                            </td>



                                            <td class="description last">
                                                <p>侦听器函数。</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>













                            </dd>




                            <dt class="">

                                <div class="nameContainer inherited">
                                    <div class="anchor" id="unset">
                                    </div>
                                    <h4 class="name">
                                        unset<span class="signature">(key, <span class="optional">silent</span>)</span>

                                        <span class="inherited"><a
                                                href="module-ol_Object-BaseObject.html#unset">inherited</a></span>



                                    </h4>

                                    <div class="tag-source">
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js">Object.js</a>,
                                        <a
                                            href="https://github.com/openlayers/openlayers/blob/v8.2.0/src/ol/Object.js#L259">line
                                            259</a>
                                    </div>

                                </div>


                            </dt>
                            <dd class="">




                                <div class="description">
                                    <p>取消设置属性。</p>
                                </div>










                                <table class="params">
                                    <thead>
                                        <tr>

                                            <th>Name</th>


                                            <th>Type</th>

                                            <th class="last">Description</th>
                                        </tr>
                                    </thead>

                                    <tbody>


                                        <tr class="">

                                            <td class="name"><code>key</code></td>



                                            <td class="type">


                                                <span class="param-type">string</span>




                                            </td>



                                            <td class="description last">
                                                <p>键名称。</p>
                                            </td>
                                        </tr>



                                        <tr class="">

                                            <td class="name"><code>silent</code></td>



                                            <td class="type">


                                                <span class="param-type">boolean</span>

                                                | undefined


                                            </td>



                                            <td class="description last">
                                                <p>在不触发事件的情况下取消设置属性。</p>
                                            </td>
                                        </tr>


                                    </tbody>
                                </table>




                                <dl class="details">





















                                </dl>













                            </dd>

                        </dl>





                    </article>

                </section>




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